Add local repository scanning and UI

Implement local repository scanning end-to-end. Frontend: add UI (toolbar, local-scan panel, list/cards), CSS styles, icons, new state fields, and templates; convert recent repo items to buttons and wire up actions to select, view and open scanned repos. JS: add helper utilities (repoNameFromPath, normalizeRemoteUrl, serverRepoRemoteUrls), scanForLocalRepos/selectLocalRepo functions, render template for scan results, and call scanLocalRepos via tauri-api. Tauri API: expose scan_local_repos (tauri command) in tauri-api.js. Backend (Rust): add LocalRepoCandidate type and a scanner implementation that walks configurable/default roots, deduplicates paths, matches local remotes against allowed server URLs, enforces depth/result limits, and returns matched candidates; register scan_local_repos in the command list. Includes error handling and user-facing messages for missing roots or remotes.

frontend/js/tauri-api.js

@@ -35,6 +35,17 @@ export async function runGitBranch(repoPath, gitPath) {
   return invoke("git_branch", { repoPath, gitPath: gitPath || null });
 }
 
+export async function scanLocalRepos(roots = [], allowedRemoteUrls = [], gitPath = "", maxDepth = 4, maxResults = 200) {
+  ensureInvoke();
+  return invoke("scan_local_repos", {
+    roots,
+    allowedRemoteUrls,
+    gitPath: gitPath || null,
+    maxDepth,
+    maxResults,
+  });
+}
+
 export async function listLocalRepoBranches(repoPath, gitPath) {
   ensureInvoke();
   return invoke("local_repo_branches", { repoPath, gitPath: gitPath || null });